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NOTA: Microsoft no ha comentado en reclamos de terceros de que el problema es que la funci\u00f3n TextEncoder.EncodeCore en el paquete System.Text.Encodings.Web en ASP.NET Core Mvc versiones anteriores a 1.0.4 y versiones 1.1.x anteriores a 1.1.3 permite a los atacantes remotos causar una denegaci\u00f3n de servicio aprovechando un fallo en calcular apropiadamente la longitud de los caracteres de 4 bytes en el rango sin car\u00e1cter Unicode."}], "id": "CVE-2017-0247", "lastModified": "2021-06-30T16:54:22.617", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-05-12T14:29:03.910", "references": [{"source": "secure@microsoft.com", "tags": ["Technical Description", "Third Party Advisory"], "url": "https://github.com/aspnet/Announcements/issues/239"}, {"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://technet.microsoft.com/en-us/library/security/4021279.aspx"}, {"source": "secure@microsoft.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}